Rapid7 has observed a recent malvertising campaign that lures users into downloading malicious installers for popular software such as Google Chrome and Microsoft Teams.
The installers were being used to drop a backdoor identified as Oyster, aka Broomstick. Following execution of the backdoor, we have observed enumeration commands indicative of hands-on-keyboard activity as well as the deployment of additional payloads.
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Source: Rapid7
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